MESON Chess Problem Database

Problem Display
PID: 24225 (Q4K2/8/2NP4/2k5/2P5/4R3/8/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Serp i molot, 1987

Q4K2/8/2NP4/2k5/2P5/4R3/8/8

#2

6 + 1

2786 More Fun with Chess Miniatures 2000
5454 Near Snap 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qa4?
      • 1...Kb6
        • 2.Qb5#
      • 1...Kxd6!
    • 1.Qa5+?
      • 1...Kxc4
        • 2.Rc3#
      • 1...Kxc6
        • 2.Qc7#
      • 1...Kxd6!
    • 1.Qb8?
      • 1...Kxc6
        • 2.Qc7#
      • 1...Kxc4!
    • 1.Qd8?
      • 1...Kxc6
        • 2.Qc7#
      • 1...Kxc4!
  • Keys
    • 1.Se5!
      • 1...Kb4
        • 2.Qa3#
      • 1...Kd4
        • 2.Qa7#
      • 1...Kb6
        • 2.Sd7#
      • 1...Kxd6
        • 2.Qc6#

This anticipates 166223(1998)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT,XP(D)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);P-FLIGHT,XP(B)::R1(A)
        • K(a);OGATEB,P-FLIGHT,XS(C)::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT,XP(D)
    • Try
      • Q(E);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(C)::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT,XP(B)
    • Try
      • Q(E);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(C)::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT,XP(B)
  • Actual
    • S(C);
    • Vars
      • K(a);S_FLIGHT::QAB1(E)
      • K(a);S_FLIGHT::QAB(E)
      • K(a);S_FLIGHT::S(C)
      • K(a);S_FLIGHT,XP(D)::QAR1(E)
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